A(n) ________ monitors the overall activity of the computer and provides services.

Answers

Answer 1

An "operation system" monitors the overall activity of the computer and provides services.

What is operation system?

An operating system (OS) is the program that manages each of the other software applications in a computer after being loaded into the computer by a boot program.

Some key features regarding the operation system are-

The application programs interact with the operating system by requesting services via a predefined application program interface (API). Furthermore, users can interact with the operating system directly via a user interface, like a command-line interface (CLI) or a graphical user interface (UI) (GUI).An operating system provides significant advantages to computer software development and software development. Without the need for an operating system, each application would have to include its own UI as well as the extensive code required to handle all low-level computer functionality such as storage media, network interfaces, and so on.

To know more about the operation system, here

https://brainly.com/question/22811693

#SPJ4


Related Questions

Using the following Information, what would the debt-to-Income ratlo be?
Jullo makes $780 per month and owes $360 on his credit card, a $210 house payment, and a $140 car payment
O 85%
91%
88%
O 96%

Answers

Answer:

88℅

Explanation:

because The payment and Car are 350 plus 10 it's 360 * 2 equals 720 and now 720 divided by 780 equals 88

88 because of how much money it is

To those outside the fashion world, a fashion model's lifestyle may seem exciting. Today's top models travel the
world and work highly profitable assignments. However, many more models today are overworked, underfed,
and unrepresented. They also have little job security. Now, one woman is trying to change that. In 2011, model
Sara Ziff started the Model Alliance. The group works to provide fair conditions and labor standards for fashion
workers. In particular, the group is concentrating on child labor laws for models under 18.
The group
models.
A employs
B features
C defends
D
opposes

Answers

The correct answer is D. Hope this helps

1: The inhabitants were mainly English-speaking, so they could work out some structuring amongst themselves.

2: Africans were enslaved and Christianity was the main religion at the time, so there may have been some religious affairs.

3: The stuggle to survive may have helped the groups to get along better.

4: Ideas that oppressed or seperated people from each other would have slowed a lot of progression in society.

Answers

Answer:

The stuggle to survive may have helped the groups to get along better.

Explanation:

if thats  not the right answer so sorry  

which is the first Asian country to add rights for Lgpt ️‍ group​

Answers

Answer:

north Korea

hope it's helps...

Answer:

The Nepalese Constitution recognizes LGBT rights as fundamental rights. Following the end of the monarchy, homosexuality was legalized across the country in 2007 along with the introduction of several new laws. These new laws explicitly include protections on the basis of sexual orientation.

linguistic determinism holds that a. the vocabulary of a language is a result of the environment in which the speakers of the language live b. how people speak, especially the correctness of grammatical use, determines their likelihood for success c. language is the basis for culture d. the grammars of people's native languages determine how they think about the world

Answers

Linguistic determinism holds that  d. the grammars of people's native languages determine how they think about the world.

Linguistic determinism is the idea that language and its systems restrict and determine human knowledge or idea, as well as idea procedures along with categorization, reminiscence, and notion. Linguistic determinism is a broader philosophical and psycholinguistic query about the relationship among notion and language. Linguistic relativity is a position that 1. the relationship among linguistic structures and structures of notion (and cognition) is deterministic and a pair of.

Learn more about Linguistic determinism here:https://brainly.com/question/21310257
#SPJ4

HMO vs PPO both are private insure. true or false?

Answers

Health Maintenance Organizations (HMOs) and Preferred Provider Organizations (PPOs) are two of the most common types of private health insurance plans available in the United States. While both are private health insurance plans, they have different characteristics and features.

HMOs typically have a more limited network of healthcare providers than PPOs. In an HMO, you typically must choose a primary care physician (PCP) who will be your first point of contact for all your healthcare needs. Your PCP will refer you to specialists or other healthcare providers within the HMO network if needed.

With an HMO, you usually pay a lower monthly premium and have lower out-of-pocket costs than a PPO. However, you are usually required to get pre-authorization from your HMO before seeking non-emergency medical care outside of the HMO network.

PPOs, on the other hand, offer a more extensive network of healthcare providers. With a PPO, you usually don't need to choose a primary care physician, and you have the flexibility to see any healthcare provider you choose, whether they are in or out of the PPO network.

However, if you go out-of-network, you will typically pay higher out-of-pocket costs. With a PPO, you usually pay a higher monthly premium than an HMO.

learn more about authorization here :

https://brainly.com/question/17941044

#SPJ11

PLEASE HELP ME!!! I NEED THIS PLEASE!!!


What was France like under the rule of the revolutionaries?


1. “active citizens”–


2. “passive citizens”–


3. Committee for Public Safety –


4. Maximilien Robespierre –

Answers

Answer:

it was the committee for public safety. send me a question if i didnt answer this correctly, or if you need more detail as to what it was like.

Explanation:

Which statement about Washington's relations with the Native Americans is true? Washington believed that the Constitution prevented the national government from making treaties with the Native Americans.
Washington made treaties and had a mutual respect with many Native Americans, but he also encouraged their assimilation.
Washington approved treaties with Native Americans only if they provided protections for indigenous lands.
Washington refused to make treaties with any Native American groups and sent in troops to remove them from their lands.

Answers

The statement about Washington's relations with the Native Americans from the list of available options which is true is:

B. Washington made treaties and had a mutual respect with many Native Americans, but he also encouraged their assimilation.

According to the given question, we are asked to state the statement about Washington's relations with the Native Americans from the list of available options which is true.

As a result of this, we can see that George Washington was eager to sign treaties with the Native Americans so that they would give up most of their lands and also assimilate among themselves. This was achieved under the Pinckney's Treaty

Therefore, the correct answer is option B

Read more about Pinckney's Treaty here:

https://brainly.com/question/20934354

Answer:

B

Explanation:

I took the test on k12 and got it right

State university has eight professors who work in the same department, and all actively support the same political party. A newly hired professor in the same department feels a need to support the political beliefs of the other professors, likely due to. Group of answer choices norm generalization role reversal group cohesiveness norm variation norm conformity

Answers

The most likely reason for the newly hired professor to feel a need to support the political beliefs of the other professors is due to norm conformity.

Norm conformity is a social influence where an individual adopts the beliefs and behaviors of a group to fit in and gain acceptance. In this scenario, the newly hired professor may feel pressure to conform to the political beliefs of the other professors to be accepted by the group. This behavior is common in groups that have a high level of group cohesiveness, where members are strongly bonded and share similar goals and values.

Learn more about norm conformity.

https://brainly.com/question/31181128

#SPJ4

Full Question: State university has eight professors who work in the same department, and all actively support the same political party. A newly hired professor in the same department feels a need to support the political beliefs of the other professors, likely due to. Group of answer choices

norm generalization role reversal group cohesiveness norm variation norm conformity

Do polite people get burned out and tired of serving others and caring about other people's feeling as and problems? If so, why? Why aren't we all nice and polite to each other? Is it because of our sin nature?
Please put some thought into your answer. Thanks in advance.

Answers

Answer:

Polite people do get burned out and tired of serving others, but still keep good grace around them. They can still have those feelings, but they might choose to repress it for a later time. We aren't all nice ans polite to each other, maybe because they don't feel understood, or are saying something that they would rather not say aloud, if you get my drift. I don't think it is because of the sinful nature. Everyone is rash at some point.

Explanation:

Decribe Britain' and Belgium' economic motivation for colonization portion of Africa. Conider the reource in demand after the Indutrial Revolution; the territorie claimed by Belgium and Britain; and the raw material and reource readily found in the Congo, Wet and Eat Africa, Egypt, the Sudan, and South Africa

Answers

In order to utilize and export Africa's resources, European nations embarked on colonization in order to grow their empires. Africa was the location of raw materials including rubber, wood, diamonds, and gold.

When did the first Europeans colonize Africa?

Beginning in the 1880s, European countries concentrated on annexing African territory, competing with one another for valuable natural resources, and founding colonies that they would control until a global phase of decolonization started in 1914 and challenged European colonial powers up until 1975.

Why was Africa referred to as the "Dark Continent"?

Because of the difficulties encountered when attempting to reach its interior, Africa was known as the "dark continent." The northern Sahara Desert served as a strong barrier to accessing the interior of the continent since it lies on the plateau rim that stretches to the coast.

To know more about colonization, visit:

https://brainly.com/question/510352

#SPJ4

I give brain to who ever give best answers ​

I give brain to who ever give best answers

Answers

Answer:

1.(D)

2.(A)

3.(D)

4.(B)

5.(C)

6.(A)

Thinking and writing question

I think it is important to study ancient civilizations such as Egypt is because

it helps students to have a better understanding of the world.

2x2 2.4 Evaluate to what extent the following institutions have or are currently supporting communities affected by human rights violations. Use an example for each to support your answer. Government • Community and • Religious organizations ​

Answers

The extent to which government, community, and religious organizations have supported communities affected by human rights violations varies depending on the context and the specific situation.

In some cases, the government may have played a critical role in addressing human rights violations, such as by passing laws or providing reparations to victims. For example, the South African government established the Truth and Reconciliation Commission in the aftermath of apartheid to investigate and provide reparations to victims of human rights violations.

Community organizations, on the other hand, may be better positioned to provide more immediate support and services to affected individuals and families. For example, a local community center may offer counseling services and legal support to survivors of domestic violence or discrimination.

Religious organizations may also play an important role in supporting communities affected by human rights violations, particularly in providing emotional and spiritual support. For example, after the 2016 Pulse nightclub shooting in Orlando, Florida, religious organizations from various faiths came together to provide comfort and support to the LGBTQ+ community.

Overall, while different institutions may have different strengths and limitations in supporting communities affected by human rights violations, it is important for all actors to work together to ensure that those who have been affected receive the support and justice they deserve.

You can learn more about human rights at: brainly.com/question/3444313

#SPJ11

Select the correct answer.
What element should readers consider when exploring how different literary genres approach the same subject?
A. the ease or difficulty with which the subject can be analyzed
B.
the authors personal feelings about the genres they select
C. the use of a structure that may be characteristic of a genre
D. the opinions of biased individuals with knowledge of the matter
Next

Answers

When users want to explore how different literary genres approach the same subject, they should consider C. the use of a structure that may be characteristic of a genre

How can different literary genres be explored?

In exploring the different literal genres, there is a need to find out the effect of structure on the characteristic of a genre.

This would allow us to compare the different genres based on their specific structures which would allow for standardization.

In conclusion, option C is correct.

Find out more on exploring literary genres at https://brainly.com/question/1638047

#SPJ1

iss 210 anthropologists are the social scientists who thought the most about cultural relativism. an attitude of cultural relativism involves seeking....

Answers

An attitude of cultural relativism, as emphasized by anthropologists in the field of cultural anthropology, involves seeking understanding, empathy, and impartiality when studying and analyzing different cultures.

ISS 210 Anthropologists are indeed social scientists who have extensively studied and thought about cultural relativism. This concept involves understanding and analyzing different cultures in their own terms, without imposing one's own cultural values and beliefs onto them. Anthropologists believe that every culture has its own unique way of viewing the world, and it's important to respect and understand these differences. Thus, an attitude of cultural relativism involves seeking to understand and appreciate cultural diversity, rather than judging other cultures based on one's own cultural norms and standards.

You can learn more about anthropologists at: https://brainly.com/question/30359602

#SPJ11

a third-grade teacher is worried about one of her students. the kid is extremely impulsive, frequently interrupts classmates, and does not follow rules. the teacher believes he has a. a neurodevelopmental disorder. b. obsessive-compulsive disorder. c. a personality disorder. d. dissociative identity disorder.

Answers

Answer: A

Explanation:

A personality disorder would be a disorder such as NPD or BPD. This child likely has ADHD or Autism so the answer would be A

What is your overall impression of the guidelines on assessment and grading this school year??

Answers

My overall impression of the guidelines on assessment and grading this school year is that they are comprehensive and provide clear direction for teachers on how to effectively evaluate student learning.

What is an impression?

Generally, The guidelines provide support for teachers in the areas of formative and summative assessment, grade-level expectations, and grading standards.

Additionally, the guidelines emphasize the importance of equity and inclusion in assessment and grading, which is especially important in this uncertain school year.

Read more about impression

https://brainly.com/question/14591053

#SPJ1

What role did tariffs play prior to the Civil War?

Answers

Answer:

I think people didn’t want to buy as much food or products from out of their country because they would have to pay more and more money if they bought a lot of things outside of there country. I think the cause of theater was the tariffs.

Explanation:

Answer:

Before the Civil War, the federal government obtained close to ninety percent of its revenue from tariffs, and because of this, the government avoided income taxation. Americans have used protective and revenue tariffs. Protective tariffs help new American industries compete with established foreign industries.

Explanation:

I've studied it before! hope this helps

A local university has been tracking performance on intelligence tests over the last 70 years. Like other researchers tracking such data, they have found that their sample has been subject to the _____, indicating that intelligence test performance has been improving.

Answers

Answer:

A local university has been tracking performance on intelligence tests over the last 70 years. Like other researchers tracking such data, they have found that their sample has been subject to the Flynn effect, indicating that intelligence test performance has been improving.

Explanation:

The Flynn effect refers to a phenomenon related to an increase in IQ test scores all around the world. What the phenomenon shows is that younger generations perform better - are more intelligent - than older generations. Among the reasons for such an increase are better nutrition, better education and the use of technology, all of which allow younger generations to not only be healthier, but also to think more abstractly.

"ai ngưng học hỏi người đó sẽ già nua,ai liên tục học hỏi người đó sẽ trẻ mãi Điều tuyệt vời nhất trên đời là giữ cho tâm trí mình mãi mãi trẻ trung". Bạn nghĩ sao về câu nói này? Hãy bình luận và chia sẻ kinh nghiệm của riêng bạn.

Answers

Answer:

You are right

yes it's more important to make your mind young

the u.s. supreme court receives less media coverage than does congress or the president. T/F

Answers

True. The statement is true. The U.S. Supreme Court generally receives less media coverage compared to Congress or the President.

The Supreme Court's proceedings, deliberations, and decisions often involve complex legal matters and may not have the same level of immediacy and public interest as the day-to-day activities of Congress or the executive actions of the President.

Congress, as the legislative branch, plays a significant role in policymaking and passing laws, while the President, as the head of the executive branch, holds considerable authority and is responsible for executing and implementing policies. Their actions and decisions often have more direct and immediate implications for public policy, governance, and current events, which can attract greater media attention.

On the other hand, the Supreme Court primarily focuses on interpreting the law, resolving legal disputes, and reviewing the constitutionality of laws and executive actions. While its decisions can have significant and long-lasting impacts, they may not always capture the same level of public attention or media coverage as the activities of Congress or the President.

Learn more about U.S. Supreme Court  here:

https://brainly.com/question/2546427

#SPJ11

express one light minute in km and meters

Answers

Answer:

Use in astronomy

Explanation:

Unit Definition Distance

light-second  2.998×10 to the 5 power km

light-minute 60 light-seconds 1.799×107 km

light-hour 60 light-minutes = 3600 light-seconds 1.079×10 to the 9 power  km

light-day 24 light-hours = 86400 light-seconds 2.590×10 to the 10 power km hope this helps you :)

PLSS help due todayyyyyy!!! :(

PLSS help due todayyyyyy!!! :(

Answers

Explanation:

Article 1=

Legislative branch

Structure: Senate and House Of Representatives

Job: Makes laws

Article 2=

Executive branch

Structure: President and Vice president

Job: Carries out and enforced laws

Article 3=

Judicial branch

Structure: One Supreme court and lower courts

Job: Interprets laws

images in popular culture seldom represent people with a disability or they represent impaired bodies as different and needy. this creates for people with disabilities

Answers

Images in popular culture seldom represent people with a disability or they represent impaired bodies as different and needy. this creates a barrier for people with disabilities.

The limited and negative representation of people with disabilities in popular culture can lead to misconceptions and stereotypes, which can in turn create barriers for people with disabilities in their everyday lives. For example, negative stereotypes can lead to discrimination in employment, education, and social interactions. Additionally, the lack of representation can contribute to feelings of isolation and invisibility for people with disabilities.

Representation in popular culture can play an important role in shaping public attitudes and perceptions towards people with disabilities and can help to break down barriers and promote inclusion. It is important for popular culture to accurately represent the diversity of experiences and perspectives of people with disabilities, and to challenge negative stereotypes and biases.

Learn more about disabilities:

https://brainly.com/question/9433223

#SPJ4

Complete Question:

images in popular culture seldom represent people with a disability or they represent impaired bodies as different and needy. this creates___ for people with disabilities.

When we search a scene, initial fixations are most likely to occur on ____ areas.
A. high-load
B. low-load
C. high-saliency
D. low-saliency

Answers

When we search a scene, initial fixations are most likely to occur on high-saliency areas Therefore the correct option is C.

When we search a scene, our initial fixations are most likely to occur on areas that are high in saliency. Saliency refers to how noticeable or attention-grabbing a particular feature in the environment is. High-saliency areas are those that stand out from their surroundings, either due to their color, contrast, brightness, or motion.

Research has shown that when we scan a scene, we tend to prioritize areas that are most salient. For example, if we are searching for a red apple in a bowl of green apples, our eyes will be drawn to the red apple first, as it stands out from the rest of the scene.

Similarly, if we are scanning a landscape scene, we will first focus on areas that are most colorful, contrasting, or moving. However, our fixation on high-saliency regions is just an initial step in the search process. Once we have focused on a salient feature, our attention shifts to other features, depending on our task demands and goals.

Hence the correct option is C

To know more about search process visit:

https://brainly.com/question/1310552

#SPJ4

ademic Calendar My MCBS Library English (en) - Time left 0:20:10 Galarneau Inc. maintains a call center to take orders, answer questions, and handle complaints. The costs of the call center for a numb

Answers

The Academic Calendar is an essential document that contains information regarding the academic sessions, semesters, term dates, and holidays that the institution offers.

It is crucial to have a clear understanding of the Academic Calendar as it can help students plan their coursework schedules, apply for financial aid, and prepare for exams, among other things. The Academic Calendar is typically published at the beginning of each academic year and can be found on the institution's website or in the student handbook.

The MCBS Library is an academic library that serves the students, faculty, and staff of Muscat College. It provides access to a wide range of information resources, including books, journals, databases, and multimedia materials. The library offers a range of services, including circulation, reference, interlibrary loan, and electronic resources.

English (en) is the most widely spoken language in the world and is the primary language of international communication. It is essential for students to have a good command of English as it can help them in their academic and professional pursuits. English language courses are offered in many educational institutions around the world, including Muscat College.

Galarneau Inc. is a company that operates a call center to take orders, answer questions, and handle complaints. The costs associated with running a call center can vary depending on several factors, including the number of agents, the number of calls received, and the technology used. To minimize costs, companies may consider outsourcing their call center operations to third-party service providers or implementing cost-cutting measures such as reducing the number of agents or implementing automation technologies.

know more about Academic Calendar here,

https://brainly.com/question/32328640

#SPJ11

when was veterans day first celebrated, and who created the holiday?

Answers

Answer:

President Dwight D. Eisenhower Created Veterans day. Veterans Day originated as “Armistice Day” on November 11, 1919, the first anniversary of the end of World War I. Congress passed a resolution in 1926 for an annual observance, and November 11 became a national holiday beginning in 1938.

why does the paradox of thrift suggest that government needs to intervene in a recession?

Answers

The paradox of thrift is an economic concept that suggests individual saving behavior, while rational on an individual level, can exacerbate a recession when collectively practiced.

The paradox arises from the fact that while saving is generally considered prudent and responsible behavior, an increase in saving during a recession can lead to a decrease in aggregate demand and worsen economic conditions.

During a recession, individuals often become more cautious about their spending and increase their savings. This behavior is driven by concerns about job security, future uncertainty, and a desire to build a financial buffer. However, when many individuals simultaneously reduce their spending and increase saving, it leads to a decrease in overall consumer demand.

This decrease in demand, in turn, affects businesses, as they experience lower sales and reduced revenue. As businesses face declining demand, they may respond by cutting production, laying off workers, and reducing investment. This creates a negative feedback loop, further dampening economic activity and exacerbating the recession.

The paradox of thrift suggests that while individual saving is prudent, if everyone in the economy saves more during a recession, it can worsen the overall economic situation. This is because reduced consumer spending can lead to a decline in economic output, lower employment, and prolonged economic downturn.

Government intervention in a recession aims to break the negative cycle of reduced demand, boost consumer and business confidence, and encourage spending and investment, thus aiding in economic recovery.

Learn more about economic   here:

https://brainly.com/question/28208676

#SPJ11

True or false: American Indians have always been closely connected to the land​

Answers

Answer:

True

Explanation:

For most, if not all Native American cultures, the land is incredibly important to them. They have far more respect and a deeper connection to nature compared to most other cultures

rosa and aisha are playing with blocks. they are working together to see how high they can stack the blocks, taking turns stacking and encouraging each other. which stage of play are they engaging in? please choose the correct answer from the following choices, and then select the submit answer button. answer choices associative onlooker cooperative parallel

Answers

Rosa and Aisha are playing with blocks, working together to see how high they can stack the blocks, taking turns stacking and encouraging each other. They are engaging in the cooperative stage of play.

What is play?

Play is a child's primary occupation. It is a type of activity that is done for its own sake. Play does not involve external goals and is not done for external reasons. It is spontaneous and voluntary.

Play can be classified into different stages:

Unoccupied play - The child appears to be unoccupied and does not appear to be playing. This is usually because the child is observing their surroundings and taking everything in.

Solitary play - The child is playing alone and is not interested in playing with others.

Onlooker play - The child is watching others play, but not actively participating. This is usually because the child is trying to learn how to play.

Associative play - The child is playing with others, but there is no common goal or rule. Children are not working towards the same goal.

Parallel play - The child is playing alongside other children, but is not engaging with them. Children are playing with the same or similar toys in the same area, but they are not playing together.

Cooperative play - Children are working towards a common goal. They are playing together and sharing ideas and toys, taking turns, and following the rules.

For such more questions on stage

https://brainly.com/question/29853967

#SPJ11

Other Questions
Gracie plans to buy a new pair of shoes for $75.00, however, the manager sells them to her for$60.00. What is the percentage discount for the cost of the shoes?a. 15%b. 20%c. 80%d. 33%e. 60% 20 is divided between Caroline, Sarah & Gavyn so that Caroline gets twice as much as Sarah, and Sarah gets three times as much as Gavyn. How much does Caroline get?HELP PLEASE Read the excerpt from "Dream Season.The next Tuesday, I ran all the way home again. When I got there, Dad was already sitting with his ear to the radio. The Dodgers game was about to begin, so I quickly pulled out my five-cent notebook.Based on the excerpt, the reader can infer that Marcuss dad isnervous for Marcus.frustrated with Marcus.excited about the game.worried he will miss the game. Which of the following is a quality of a feelerA) focus on logic B) system of lists and calendarsC) empathy for others D) depth of interest I need help please ASAP???!!!! Prestige Wertefovide The fothowiryg data retates to Preatige Worlchetcho in niet operatirg perioc Calcuiate the total cost of goods a ofe for oach proctuet. Plogineing irventory ia oPrestige Worldwi during exercise, sensory receptors detect changes in oxygen and carbon dioxide levels in the blood. this information is then sent to the brain's medul Tony is designing an indoor play area. He knows the width will be 14 feet. He wants the length to be a multiple of 6 and thus records it as 6x. The area of the indoor play area must be greater than 588 square feet. Write an inequality that can be used to find the possible x-values for the desired area. Include all necessary work to support your answer graph the inequality.write two ordered pairs that are solutions write two ordered pairs that are not solutions who created a cabinet-level "drug czar" position to coordinate the "war on drugs"? is 836,perfect, deficient,or abundant Ms. Kenny finds that she has 7/8 of a pound of clay for a project. the project requires 1/6 of a pound. How many projects can ms Kenny complete without running out of clay? if 7 is the tenths place of 637.739 what digit is 10 times the value of the underlined digit (7) Which of the following were methods used to deny Black Americans thevote in the Jim Crow South? by 1890, populations in the biggest urban areas select one: a. increased mainly as a result of longer life expectancy. b. experienced massive growth even where there was little immigration. c. rose as the number of children born into urban families doubled. d. soared as the rates of infant mortality and disease significantly declined. e. consisted mostly of foreign-born immigrants and their children. First Pirate A proposes a division of the coins. All pirates then vote on whether to accept the proposed division. If the proposal gets a majority vote, it is accepted, and the game is over. If the proposal fails to get a majority vote, Pirate A is executed (thrown out of the boat). It is then Pirate Bs turn to propose a division of the coins between the remaining pirates. The same rules apply, with one exception: if the vote is a tie (which can happen when the number of pirates is even), the strongest remaining pirate gets an additional vote to break the tie. Give an example of a historic event influenced by a governments desire to maintain its prestige (other than Russia in the World War I ) the population pyramid might be considered what how many calories per gram are provided by carbohydrates and protein? adam bought a skateboard that is on sale for 35% off. the original cost is $150. what is the sale price? show your work